Rae and Bruce Hostetler not only work very hard，they also relax just as well.Numerous vacations help  the couple to maintain their health and emotional wellbeingand it’s no surprise to health care professionals.
“Rest，relaxation，and  stress  reduction are very  important for people’s wellbeing and health.This can be accomplished through daily activities，such as exercise and meditation，but vacation is an important part of this as well，” said primary care physician Natasha Withers from One Medical Group in New York.Withers lists a decreased risk of heart disease and improved reaction time as some of the benefits from taking some time off.“We also know that the mind is very powerful and can help with healing，so a rested，relaxed mind is able to help the body heal better，” said Withers.
Psychologists confirm the value of vacations for the mind.“The impact that taking a vacation has on one’s mental health is great，” said Francine Lederer，a clinical psychologist in Los Angeles who specializes in stress and relationship management.“Most people have better life perspective and are more motivated to achieve their goals after a vacation，even if it is a 24hour timeout.” The trips could be good for their health，good for their family and good for their businesses.
The online travel agency Expedia conducted a survey about vacation time in 2010，and according to their data the average American earned 18 vacation days—but only used 14 of them.France topped the list，with the average worker earning 37 vacation days and using all but two of them.Americans’ responses may not be surprising in a culture where long hours on the job often are valued，but that’s not always good for the individual，the family or the employer.
Psychologists have also found that people who don’t take enough time to relax may find it harder to relax in the future.“Without time and opportunity to do this，the nerve connections that produce feelings of calm and peacefulness become weaker，making it actually more difficult to shift into lessstressed states，” Mulhern said.
How did the author introduce the topic of the text?

A．By making comparisons.	B．By giving an example.
C．By raising questions.	D．By providing data.

According to Natasha Withers，vacations can________.

A．weaken reaction system

B．cure serious diseases

C．reduce the level of wellbeing

D．decrease the risk of heart disease

Expedia’s survey shows that Americans________.

A．dislike family gatherings

B．have the shortest vacation

C．enjoy as many vacations as the French

D．think much of spending long hours on the job

What can be inferred from the last paragraph?

A．One should never wait to relax.

B．Work and rest go against each other.

C．Time and opportunity wait for no man.

D．A relaxed mind determines everything.

What is mainly talked about in the text?

A．Ways to relax in one’s free time.

B．The benefits of taking time off.

C．Different opinions on holidays.

D．The Hostetlers always on the go.